First time meeting my stepsister's client leads to a trip down memory lane

After a hefty night out, I stumble into a peculiar situation. It turns out that my stepsister has been dabbling in the world of adult entertainment, and her latest client is waiting for her. Intrigued, I decide to hang back and watch the show. As things heat up, I can't resist the allure of her client's luscious, big tits. I find myself drawn to them, my fingers exploring their softness. The room fills with moans as I pleasure myself, my hand sliding down to stroke my throbbing member. The sight of my stepsister, lost in ecstasy, only fuels my desire. I continue to masturbate, my movements becoming more frantic as I near climax. With a final, guttural groan, I release my load, my hot cum splattering across my chest. The experience is overwhelming, a wild ride of pleasure and taboo that leaves me breathless.